Except where otherwise provided, the provisions of the Civil Code as amended by this Act (hereinafter referred to as the "New Act") also apply to mortgages that exist at the time this Act comes into effect and that are revolving mortgages (hereinafter referred to as "former revolving mortgages"); provided, however, that this does not preclude effects that arose under the provisions of the Civil Code before amendment (hereinafter referred to as the "Former Act").